C Programming Questions and Answers – String Operations – 2

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This set of C Multiple Choice Questions & Answers (MCQs) focuses on “String Operations – 2”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

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1. What type of return-type used in String operations?
a) void only
b) void and (char *) only
c) void and int only
d) void, int and (char *) only
View Answer

Answer: d
Explanation: None.

2. String operation such as strcat(s, t), strcmp(s, t), strcpy(s, t) and strlen(s) heavily rely upon.
a) Presence of NULL character
b) Presence of new-line character
c) Presence of any escape sequence
d) None of the mentioned
View Answer

Answer: a
Explanation: None.
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3. Which pre-defined function returns a pointer to the last occurence of a character in a string?
a) strchr(s, c);
b) strrchr(s, c);
c) strlchr(s, c);
d) strfchr(s, c);
View Answer

Answer: b
Explanation: None.

4. Which of the following function compares 2 strings with case-insensitively?
a) strcmp(s, t)
b) strcmpcase(s, t)
c) strcasecmp(s, t)
d) strchr(s, t)
View Answer

Answer: c
Explanation: None.
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5. What will be the value of var for the following C statement?

var = strcmp("Hello", "World");

a) -1
b) 0
c) 1
d) strcmp has void return-type
View Answer

Answer: a
Explanation: None.
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6. What will be the output of the following C code?

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  1.     #include <stdio.h>
  2.     int main()
  3.     {
  4.         char str[10] = "hello";
  5.         char *p = strrchr(str, 'l');
  6.         printf("%c\n", *(++p));
  7.     }

a) l
b) o
c) e
d) Compilation error
View Answer

Answer: b
Explanation: None.

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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